How do I make a CLI with Django for a database
I'm a student and I got assigned for a project where I'm using Django + PostgreSQL and I'm supposed to make a CLI (Command Line Interface) possibly with Django showing my database modules. What's the easiest way to do that? I only have some knowledge in C++ programming so I was thinking like a switch statement where a user has an option to choose from different queries, but I don't know how to do that in Django.
Thank you :)
django postgresql
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
add a comment |
I'm a student and I got assigned for a project where I'm using Django + PostgreSQL and I'm supposed to make a CLI (Command Line Interface) possibly with Django showing my database modules. What's the easiest way to do that? I only have some knowledge in C++ programming so I was thinking like a switch statement where a user has an option to choose from different queries, but I don't know how to do that in Django.
Thank you :)
django postgresql
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
add a comment |
I'm a student and I got assigned for a project where I'm using Django + PostgreSQL and I'm supposed to make a CLI (Command Line Interface) possibly with Django showing my database modules. What's the easiest way to do that? I only have some knowledge in C++ programming so I was thinking like a switch statement where a user has an option to choose from different queries, but I don't know how to do that in Django.
Thank you :)
django postgresql
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
I'm a student and I got assigned for a project where I'm using Django + PostgreSQL and I'm supposed to make a CLI (Command Line Interface) possibly with Django showing my database modules. What's the easiest way to do that? I only have some knowledge in C++ programming so I was thinking like a switch statement where a user has an option to choose from different queries, but I don't know how to do that in Django.
Thank you :)
django postgresql
django postgresql
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
asked Nov 14 '18 at 12:48
EmbryoyoEmbryoyo
11
11
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
If you want to access the database shell, just run ./manage.py dbshell. But if you want to show your tables directly from command line, you can use custom django management command, but showing the table is not related to Django, rather than just using a SQL query using python. For example:
You can add a new python file in any_django_app/management/commands and name it show_tables.py, and inside it, put the following code:
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
"Shows DB tables, also you can pass your DATABASE NAME through this command"
)
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which to open a shell. Defaults to the "default" database.',
)
def handle(self, **options):
connection = connections[options['database']]
try:
cursor = connection.cursor()
cursor.execute("""SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public'""")
for table in cursor.fetchall():
print(table[0])
except OSError:
# Note that we're assuming OSError means that the client program
# isn't installed. There's a possibility OSError would be raised
# for some other reason, in which case this error message would be
# inaccurate. Still, this message catches the common case.
raise CommandError(
'You appear not to have the %r program installed or on your path.' %
connection.client.executable_name
)
Now, run ./manage.py show_tables, then it will show the tables from database.
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you want to access the database shell, just run ./manage.py dbshell. But if you want to show your tables directly from command line, you can use custom django management command, but showing the table is not related to Django, rather than just using a SQL query using python. For example:
You can add a new python file in any_django_app/management/commands and name it show_tables.py, and inside it, put the following code:
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
"Shows DB tables, also you can pass your DATABASE NAME through this command"
)
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which to open a shell. Defaults to the "default" database.',
)
def handle(self, **options):
connection = connections[options['database']]
try:
cursor = connection.cursor()
cursor.execute("""SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public'""")
for table in cursor.fetchall():
print(table[0])
except OSError:
# Note that we're assuming OSError means that the client program
# isn't installed. There's a possibility OSError would be raised
# for some other reason, in which case this error message would be
# inaccurate. Still, this message catches the common case.
raise CommandError(
'You appear not to have the %r program installed or on your path.' %
connection.client.executable_name
)
Now, run ./manage.py show_tables, then it will show the tables from database.
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
add a comment |
If you want to access the database shell, just run ./manage.py dbshell. But if you want to show your tables directly from command line, you can use custom django management command, but showing the table is not related to Django, rather than just using a SQL query using python. For example:
You can add a new python file in any_django_app/management/commands and name it show_tables.py, and inside it, put the following code:
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
"Shows DB tables, also you can pass your DATABASE NAME through this command"
)
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which to open a shell. Defaults to the "default" database.',
)
def handle(self, **options):
connection = connections[options['database']]
try:
cursor = connection.cursor()
cursor.execute("""SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public'""")
for table in cursor.fetchall():
print(table[0])
except OSError:
# Note that we're assuming OSError means that the client program
# isn't installed. There's a possibility OSError would be raised
# for some other reason, in which case this error message would be
# inaccurate. Still, this message catches the common case.
raise CommandError(
'You appear not to have the %r program installed or on your path.' %
connection.client.executable_name
)
Now, run ./manage.py show_tables, then it will show the tables from database.
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
add a comment |
If you want to access the database shell, just run ./manage.py dbshell. But if you want to show your tables directly from command line, you can use custom django management command, but showing the table is not related to Django, rather than just using a SQL query using python. For example:
You can add a new python file in any_django_app/management/commands and name it show_tables.py, and inside it, put the following code:
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
"Shows DB tables, also you can pass your DATABASE NAME through this command"
)
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which to open a shell. Defaults to the "default" database.',
)
def handle(self, **options):
connection = connections[options['database']]
try:
cursor = connection.cursor()
cursor.execute("""SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public'""")
for table in cursor.fetchall():
print(table[0])
except OSError:
# Note that we're assuming OSError means that the client program
# isn't installed. There's a possibility OSError would be raised
# for some other reason, in which case this error message would be
# inaccurate. Still, this message catches the common case.
raise CommandError(
'You appear not to have the %r program installed or on your path.' %
connection.client.executable_name
)
Now, run ./manage.py show_tables, then it will show the tables from database.
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
If you want to access the database shell, just run ./manage.py dbshell. But if you want to show your tables directly from command line, you can use custom django management command, but showing the table is not related to Django, rather than just using a SQL query using python. For example:
You can add a new python file in any_django_app/management/commands and name it show_tables.py, and inside it, put the following code:
from django.core.management.base import BaseCommand, CommandError
from django.db import DEFAULT_DB_ALIAS, connections
class Command(BaseCommand):
help = (
"Shows DB tables, also you can pass your DATABASE NAME through this command"
)
requires_system_checks = False
def add_arguments(self, parser):
parser.add_argument(
'--database', default=DEFAULT_DB_ALIAS,
help='Nominates a database onto which to open a shell. Defaults to the "default" database.',
)
def handle(self, **options):
connection = connections[options['database']]
try:
cursor = connection.cursor()
cursor.execute("""SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public'""")
for table in cursor.fetchall():
print(table[0])
except OSError:
# Note that we're assuming OSError means that the client program
# isn't installed. There's a possibility OSError would be raised
# for some other reason, in which case this error message would be
# inaccurate. Still, this message catches the common case.
raise CommandError(
'You appear not to have the %r program installed or on your path.' %
connection.client.executable_name
)
Now, run ./manage.py show_tables, then it will show the tables from database.
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
edited Nov 14 '18 at 13:32
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
answered Nov 14 '18 at 13:19
ruddraruddra
14k32748
14k32748
add a comment |
add a comment |
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